Agilent 7693 Automatic Liquid Sampler (Used, Refurbished)
| Brand | Agilent Technologies |
|---|---|
| Origin | Canada |
| Model | 7693 |
| Product Category | Chromatography |
| Usage Duration | 2–3 years |
| Warranty | 6 months |
| Configuration | Dual-Tower with 150-position refrigerated sample tray option |
| Injection Speed | <100 ms |
| Syringe Capacity | 100 µL (up to 50 µL single-stroke injection) |
| Sample Preparation Functions | Automated dilution, internal standard addition, solvent addition, mixing, and programmable heating |
Overview
The Agilent 7693 Automatic Liquid Sampler (ALS) is a high-performance, modular autosampler engineered for gas chromatography (GC) systems. Designed as the evolutionary successor to the widely adopted 7683B ALS, the 7693 integrates proven Agilent fluidic architecture with enhanced automation capabilities to deliver superior reproducibility, reduced carryover, and expanded sample preparation functionality. Its core operational principle relies on precise syringe-driven liquid handling under programmable pressure and temperature control, enabling accurate volumetric delivery across diverse matrix types — from volatile organic compounds in environmental extracts to residual solvents in pharmaceutical intermediates. The system employs a dual-tower configuration supporting simultaneous operation of two independent sampling arms, effectively doubling throughput without compromising injection precision. With sub-100 ms injection time and digitally controlled plunger velocity, the 7693 minimizes analyte degradation and needle discrimination effects—critical for thermally labile or low-concentration targets. It is compatible with all Agilent GC platforms (e.g., 7820A, 7890B, 8890) and supports seamless integration into GLP/GMP-compliant workflows when paired with compliant software environments.
Key Features
- Dual-simultaneous sampling architecture: Two independent injection towers operate in parallel, increasing sample throughput by up to 100% versus single-arm configurations.
- Ultra-fast injection (<100 ms): Minimizes thermal stress on sensitive analytes and reduces column overloading risk during splitless injections.
- Advanced syringe design: Optimized for low carryover (<0.01%) and extended service life; supports sandwich injection mode for pre-mixing internal standards or solvents within the syringe barrel.
- Integrated sample preparation: Programmable functions include automated dilution (1:2 to 1:100), internal standard spiking, solvent addition, vortex mixing, and temperature-controlled incubation (optional heater/cooler module).
- High-capacity sample handling: Standard 150-position tray (3 × 50-vial racks), compatible with refrigerated storage (4 °C); optional tray expansion supports up to 10 solvent bottles and 5 waste vials.
- Modular scalability: Easily reconfigured between GC instruments or upgraded from single- to dual-tower operation via field-installable kits.
Sample Compatibility & Compliance
The 7693 accommodates standard 12 × 32 mm GC vials (including crimp-top and snap-cap formats), as well as custom-format containers via adapter kits. It handles aqueous, organic, and viscous matrices—including acetonitrile-based extracts, DMSO-dissolved APIs, and hydrocarbon-rich petrochemical samples—without requiring hardware modification. All fluidic pathways are constructed from chemically inert materials (e.g., PEEK, fused silica, stainless steel) to ensure compatibility with aggressive solvents such as chloroform, THF, and concentrated acids/bases. From a regulatory standpoint, the instrument meets mechanical and electrical safety requirements per CSA C22.2 No. 61010-1 and IEC 61010-1. When operated with Agilent OpenLab CDS or MassHunter software configured for audit trail and electronic signature support, it satisfies data integrity expectations aligned with FDA 21 CFR Part 11 and ISO/IEC 17025 documentation protocols.
Software & Data Management
The 7693 operates under Agilent’s OpenLab Chromatography Data System (CDS) or MassHunter Workstation software, both of which provide full method development, sequence definition, real-time status monitoring, and post-run reporting. Sequence templates support conditional logic (e.g., “if peak area < X, re-inject”), dynamic dilution factor adjustment, and auto-calibration loops. Audit trails record all user actions—including method edits, sequence modifications, and calibration events—with timestamps, operator IDs, and IP addresses where networked. Raw data files (.D directories) are stored in vendor-neutral formats compliant with ASTM E1957 and are exportable to LIMS via CSV, XML, or direct ODBC connectivity. Firmware updates are delivered through Agilent’s official support portal and validated per change control procedures required in regulated laboratories.
Applications
- Environmental analysis: EPA Method 8260D/8270E compliance testing for VOCs and SVOCs in soil, water, and air samples.
- Pharmaceutical QC: Residual solvent quantification per ICH Q3C guidelines using headspace-GC/FID or GC/MS.
- Petrochemical QA: Hydrocarbon group-type analysis (HTA) and benzene/toluene/xylenes (BTX) profiling in reformulated gasoline.
- Food & flavor testing: Quantitative determination of aldehydes, esters, and terpenes in essential oils and fermented beverages.
- Academic research: High-throughput method development for chiral separations, reaction monitoring, and kinetic studies requiring precise reagent addition.
FAQ
Is this unit fully refurbished and performance-verified?
Yes — each 7693 undergoes complete functional validation including syringe leak testing, carryover assessment (<0.01%), injection repeatability (RSD < 0.5% at 5 µL), and temperature stability verification across all heated zones.
Does it include original Agilent documentation and firmware?
All units ship with digitized copies of the Agilent 7693 User Manual, Safety Guide, and Installation Qualification (IQ) checklist. Firmware is updated to the latest publicly released revision (vA.05.02 or newer).
Can it be integrated with non-Agilent GC systems?
While native communication is optimized for Agilent GCs via RS-232 or LAN, third-party integration is possible using ASCII command protocol documentation available under NDA from Agilent.
What warranty and technical support options are available?
Standard 6-month parts-and-labor warranty is included. Extended service plans (12–36 months) with remote diagnostics and priority response are available upon request.
Are consumables and spare parts stocked?
Yes — syringes (G4513-60705), septa (5183-4759), vial caps (5183-4477), and O-rings are maintained in inventory and shipped with expedited fulfillment.
